Disk-harrow



(No Model.)

L. E. PHELPS, R. K. SWIFT & J. J. ZELLER.

DISK EAR-ROW.

N. FETERS. Phuloufivognpwr, Wiihington, D. C-

ilNiTEb STATES Tricia PATENT LYMAN E. PHELPS, OF ROCHELLE, AND R. K.S\VIFT AND JOHN J. A. ZELLER, OF ROCK FALLS, ILLINOIS.

DISK HARROW,

SPECIFICATION forming part of Letters Patent No. 368,609, dated August23, 1887.

Application tiled Februaiy 7, 1887. Serial No. 226,840. (No model.)

To aZZ whom it may concern.-

Be it known that we, LYMA-N E. PHELPS,

R. K. SWIFT, and JOHN J. A. ZELLER, citizens of the United States, saidPHELrs residing at Rochelle, Illinois, and said SWIFT and ZELLER at RockFalls, in the county of Whiteside and State of Illinois, haveinventedcertain new and useful Improvements in Disk- Harrows; and we do herebydeclare the fol- 1o lowing to be a full, clear, and exact description oftheinvention, such as will enableothers skilled in the art to whichitappertains to make and use the same, reference being bad to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

Our invention consists in certain improve ments in disk-harrows, beingadditions which we have found to be advantageous and practicablc to theconstruction shown in United States Patents Nos. 310,475 and 337,017,

heretofore granted us for improvements in disk-barrows on January 6,1885, and March 2, 1886, respectively; and inasmuch as the 2 5 presentconstruction is in the mode such as exhibited in said patents, we do notdeem it necessary to repeat or describe the same further than would benecessary to make clear the location, construction, and operation of ourpresent improvements.

In the drawings, Figure 1 exhibits the rear elevation of the left one ofthe gang of disks, showing the location relative to the disks of theoscillating scraper-bar. The short dotted lines at the end of said barindicate the direction taken by the latter when the scrapers arepermitted to fall away from the disks. Fig. 2 shows the end and sideview of our improved nut-lock for holding the nut on the end of the axleof the disk-gangs in any desired position. Fig. 3 is a partial sideelevation exhibiting the slotted plate at the rear of the tongue, whichis adj ustably seated over and intended to regulate the altitude of thedraft-rods D D, which latter are respectively attached to the inner endsof the disk-gangs in any suitable mode. Fig. 4 is a cross-section in theline m x of Fig. 3.

The .foregoing specified devices constitute it' l substantially theimprovements which are desired to be secured by this application.

Referring to Fig. 1, A is the transverse drafo frame, to which the axleB of the disk-gang is attached by means of vertical braces 0, connectingsaid draftframe with said axle, the lower end. of said braces beingcollared on said 5 5 axle. E is a plank or board extending verticallyedgewise from and suitably attached to the rear of the draft-frame A. Fis a scraperbar pivoted at its longitudinal center on the bolt F, thelatter being passed transversely through the bar F and plank E. G G arethe scrapers fastened adjustably, as shown, by means of bolts passedthrough the horizontal slots G in the shank of the scraper G. Thecnttingfaces of the scrapers G are shaped to conform to the concavefaces of the disks H when drawn into contact with the latter. Thescraper-bar F is so pivoted that its center of gravity is slightlywithin the pivot-bolt F, so that the scraper-bar in its normal positionwill swing downward at its inner end and upward at its outer end, inthedirectionindicatedby the short dotted lines at the ends thereof, andthus cause the scrapers G to swing out of contactwith the disks H. Thestop or rest G, attached 7 5 to the frame A, limits the oscillation ofsaid scraper-bar. As above stated, Fig. 1 exhibits the left one of thegangs. A suitable handle, G is placed upon the bar F near its inner endand within convenient reach from the drivers seat, The normal positionof the scraper-bar is that in which the scrapers have automaticallyswung away from the disks H, and when it is desired to scrape said disksthe driver grasps the handle G, and, by slightly 8 5 raising the innerend of the bar F, brings the scrapers G into contact with the disks Hand holds them there until the disks are sufficiently cleaned, when, byremoving his hand, the scrapers automatically, by means of the oscilolation of the bar F, fall away from the disks. The operation can berepeated and prolonged as often or as long as may be necessary, it oftenbeing the casein some soils that little or no scraping is required. 9The operation of this improvement of ours is commendable for itssimplicity and efficiency.

Referring to Fig. 2, O is a vertical brace,the lower end of which isloosely collared on the axle B of the disk-gangs. J is the nut screwedon the outer end of the axle B,andintended to exert a certain degree ofcompression throughout the gang of disks. It is impracticable to screwthe nut J sufficiently tight to insure its stability. At the same timethe wear on th e ends of the boxes or thimbles of the disks H requiresthat the nut J be adjustable; and it is sometimes necessary to removesaid nut in order to replace broken parts. The required condition of thenutJ being therefore that of comparative looseness, great difficulty hasbeen experienced in holding the latter at any required position. In ourinvention we have obviated this difticulty by providing the nut-lock K,which is furnished at its upper end with slot K, through which it isstrung and adapted to slide loosely on the brace G. e The lower end ofthe lock K is adapted to slide loosely down 7 over the front and rearedges of the nut J, and thereby hold the latter from casually turning ineither direction. The gravity of the lock K holds it in position on thenut J, and when it is desired to remove or change the latter said lockis easily slipped up on the brace G sufficiently to disengage the nut J,and when the latter is replaced the lock K automatically drops over saidnut and holds the latter in any position in which it is placed. As thelock K can be disengaged from the nut only by rising vertically, nooperation or jar of the disk-gang will cause its disengagement.

Referring to Figs. 3 and 4, L is atongue, to the sides of which arepivotally attached the draft-rods D I). As in the operation of thedisk-gangs the tendency of their inner ends is to rise, some method ofpreventing such rising is necessary in order to compel the line of disksto remain parallel to the surface of the ground. This might beaccomplished by a fixed stop over the draft-rods D were it not for thefact that the varying heights of different teams would change themaximum altitude permitted to such rods. To meet this exigency weprovide the plate M, which is seated adj ustably onthe rear side of theshort brace L on the rear end of the tongue L by means of the verticalslot M in such plate, through which slot said plate is attached by meansof the bolt M to said brace L. Recesses M in the lower edgeof the plateM bestride, respectively, the rods D and limit the upward movement ofthe latter. By means of the slot M the altitude of the plate M relativeto that of the rods D can be adjusted to suit the height of differentteams, or to regulate for any reason the maximum altitude of the innerend of the disk-gangs.

What we claim as our invention, and desire to secure by Letters Patentof the United States, is

1. In a disk-barrow, in combination with the disks H, the scraper-barF,'pivoted near its longitudinal center to any suitable part of themachine and extended substantially parallel with the line of said disks,scrapers G G, attached to said bar F, the center of gravity of said barand its attached scrapers being slightly at one side of the pivotalpoint of said bar, so that said scrapers by means of the oscillation ofsaid bar will automatically swing away from said disks and be adapted tobe drawn into contact with the latter as required, substantially asshown, and for the purpose described. 1

2. In combination with the gang of disks H, a superimposed scraper-bar,F, adapted to oscillate on its pivotal point, placed at or near itslongitudinal center, and scrapers G, at-

tached to said bar and adapted, substantially as shown, toautomatically, by means of the oscillation of said bar upon its pivot,swing out of contact with said disks and be drawn into contact with thelatter at will for the purpose described. I

3. In a disk-harrow, the combination of a gang of disks, the oscillatingscraper-bar, and scrapers attached to said bar and adapted by theoscillation of the latter to be drawn to or from the sides of saiddisks, respectively, substantially as shown, for the purpose described.

4. In a disk-barrow, the combination of the nut J, seated on the axle ofthe disk-gang, the nut-lock K, provided with slot K, anda vertical braceor way,O,- passed loosely through said slot K, whereby said lock K isadapted by its own gravity to engage and hold said nut in any desiredposition, substantially as LYMAN E. PHELPS. R. K. SWIFT. JOHN J. A.ZELLER.

Witnesses:

THOMAS A. GALT, OYRUs KEHR.

